diff --git a/.kokoro/build.sh b/.kokoro/build.sh
index 236faa2ad..d8e9ec75f 100755
--- a/.kokoro/build.sh
+++ b/.kokoro/build.sh
@@ -72,6 +72,7 @@ javadoc)
 integration)
     mvn -B ${INTEGRATION_TEST_ARGS} \
       -ntp \
+      -Dprotobuf.version=4.29.4 \
       -Penable-integration-tests \
       -DtrimStackTrace=false \
       -Dclirr.skip=true \